00309nam a2200109Ia 4500008004100000082001800041100001700059245006600076260001200142300001600154490002900170260219b        |||||||| |||| 00| 0 eng d  a330.183 Si594  aSimon, H. A.  aCausality and econometrics; comment reply by H. O. A. Woldb/  a b c   app. 193-197  aEconometrica, April 1959